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Química Nova

versão impressa ISSN 0100-4042versão On-line ISSN 1678-7064

Resumo

ALMEIDA, Vanessa Vivian de et al. Optimization of the carrot leaf dehydration aiming at the preservation of omega-3 fatty acids. Quím. Nova [online]. 2009, vol.32, n.5, pp.1334-1337. ISSN 0100-4042.  http://dx.doi.org/10.1590/S0100-40422009000500042.

The carrot leaf dehydration conditions in air circulation oven were optimized through response surface methodology (RSM) for minimizing the degradation of polyunsaturated fatty acids, particularly alpha-linolenic (LNA, 18:3n-3). The optimized leaf drying time and temperature were 43 h and 70 ºC, respectively. The fatty acids (FA) were investigated using gas chromatography equipped with a flame ionization detector and fused silica capillary column; FA were identified with standards and based on equivalent-chain-length. LNA and other FA were quantified against C21:0 internal standard. After dehydration, the amount of LNA, quantified in mg/100 g dry matter of dehydrated carrot leaves, were 984 mg.

Palavras-chave : alpha-linolenic acid; carrot leaves; optimized drying.

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